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Which combination would best make orange effective for a warning sign in a poster?

Answer and explanation

Correct answer: Bright orange on a dark blue background

A warning sign needs strong visibility, so both hue contrast and value contrast are important. Bright orange is strongly separated from dark blue because they are near complementary colours on the colour wheel, and their lightness difference makes the sign easier to notice and read. Option B therefore gives the most effective combination. Yellow, brown, and white backgrounds in the other choices either reduce hue contrast, reduce value contrast, or make the orange appear weak and less urgent.

Related tags

Secondary ColoursOrangePoster DesignContrastColour TheoryArt EducationClass 9 Mcq

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